AOZ6623DI

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AOZ6623DI is a family of DC-DC switching regulator controllers designed to generate a regulated voltage output with high efficiency. This family of controllers provides a variety of features and protection functions, allowing the user to set up their output stage to design the power supply most suitable for the device. This article provides an overview of the application field of AOZ6623DI as well as its working principle.

Application Field

AOZ6623DI is optimized for 2 MHz to 5 MHz voltage conversion applications, with supplies ranging from 4.5V to 14V and output voltages between 0.8V to 4.5V. It is incredibly flexible and can be used in a variety of applications, such as notebook adapters, telecom equipment, battery-based systems, server PSUs, compact PCI power supply, LED display and industrial power systems.

In applications where IT equipment needs to be powered efficiently and reliably, such as low power legacy server and storage systems and workingstations, AOZ6623DI can be used to extend battery and mains power on a smaller area design with no need for a large heatsink. This makes it ideal for low profile, small form factor embedded PCs, as well as larger form factormotherboards.

AOZ6623DI will also find use in critical equipment such as data centers, embedded systems, and medical, telecom and other industrial equipment, including cameras and scan boxes. This device is particularly well-suited for use in applications that require long life and high reliability from the power system as it is rugged, over-current and over-temperature protected.

Working Principle

The AOZ6623DI works by controlling an external NMOS or PMOS low side switch to regulate an output voltage. To reduce power loss and improve efficiency, the AOZ6623DI senses the output voltage, compares it with the internal reference, and modulates the gate drive to keep the voltage constant.

The device comes with essential features such as programmable slew rate control, dead-time control, and built-in compensation blocks. It is also capable of operating in either a frequency mode or a voltage mode, giving design flexibility and optimum output performance.

To increase the efficiency of the system, the AOZ6623DI can be equipped with power save functions, allowing it to adjust the switching frequency in response to load conditions. This enables a much higher efficiency that can be adjusted dynamically.

In addition, this family of devices includes an over-voltage protection (OVP) to ensure that the power supply will be automatically shut down when the output voltage goes above the predetermined level. This feature, in combination with the other safety features, ensures reliable and long-term operation.

Conclusion

In summary, the AOZ6623DI from Diodes Incorporated is a DC-DC switching regulator controller that is suitable for multiple applications. It is designed for low power systems and can be used in a variety of devices such as telecom equipment, embedded PCs, and industrial systems. The device is rugged, over-current and over-temperature protected, and comes with essential features such as programmable slew rate control and dead-time control. This ensures reliable and long-term operation.

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